Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 38/15.5-20 | 375/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.99 (965.04) | 37.72 (958) | -0.28 (-7.04) -0.7% |
| Width inches (mm) | 15.51 (394) | 14.76 (375) | -0.75 (-19) -4.8% |
| Circum. inches (mm) | 119.36 (3031.76) | 118.49 (3009.65) | -0.87 (-22.12) -0.7% |
| Sidewall Height inches (mm) | 9 (228.52) | 8.86 (225) | -0.14 (-3.52) -1.5% |
| Revolutions per mile (km) | 530.83 (329.84) | 534.73 (332.26) | 3.9 (2.42) 0.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.85 mph (31.95 km/h) |
| 25 mph (40.23 km/h) | 24.82 mph (39.94 km/h) |
| 30 mph (48.28 km/h) | 29.78 mph (47.93 km/h) |
| 35 mph (56.33 km/h) | 34.74 mph (55.92 km/h) |
| 40 mph (64.37 km/h) | 39.71 mph (63.9 km/h) |
| 45 mph (72.42 km/h) | 44.67 mph (71.89 km/h) |
| 50 mph (80.47 km/h) | 49.64 mph (79.88 km/h) |
| 55 mph (88.51 km/h) | 54.6 mph (87.87 km/h) |
| 60 mph (96.56 km/h) | 59.56 mph (95.86 km/h) |
| 65 mph (104.61 km/h) | 64.53 mph (103.84 km/h) |
| 70 mph (112.65 km/h) | 69.49 mph (111.83 km/h) |
| 75 mph (120.7 km/h) | 74.45 mph (119.82 km/h) |
| 80 mph (128.75 km/h) | 79.42 mph (127.81 km/h) |
| 85 mph (136.79 km/h) | 84.38 mph (135.8 km/h) |
| 90 mph (144.84 km/h) | 89.34 mph (143.78 km/h) |
| 95 mph (152.89 km/h) | 94.31 mph (151.77 km/h) |
| 100 mph (160.93 km/h) | 99.27 mph (159.76 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1361 | 1581 | 1702 | 1778 | 1859 | 1917 | 1980 | 2056 | 2160 | 2264 | 2380 | 2473 | 2640 | 2826 | 2971 | 3063 | 3115 | 3306 | 3573 | 4152 |
Better Fuel Economy Factory Ratios Increased Power
